diff --git a/pom.xml b/pom.xml
index 5661c2c..c3385e2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>me.xginko.VillagerOptimizer</groupId>
     <artifactId>VillagerOptimizer</artifactId>
-    <version>1.2.0</version>
+    <version>1.3.0</version>
     <packaging>jar</packaging>
 
     <name>VillagerOptimizer</name>
diff --git a/src/main/java/me/xginko/villageroptimizer/WrappedVillager.java b/src/main/java/me/xginko/villageroptimizer/WrappedVillager.java
index 1a55225..365887a 100644
--- a/src/main/java/me/xginko/villageroptimizer/WrappedVillager.java
+++ b/src/main/java/me/xginko/villageroptimizer/WrappedVillager.java
@@ -14,10 +14,12 @@ public final class WrappedVillager {
 
     private final @NotNull Villager villager;
     private final @NotNull PersistentDataContainer dataContainer;
+    private final boolean parseOther;
 
     WrappedVillager(@NotNull Villager villager) {
         this.villager = villager;
         this.dataContainer = villager.getPersistentDataContainer();
+        this.parseOther = VillagerOptimizer.getConfiguration().support_other_plugins;
     }
 
     /**
@@ -35,10 +37,28 @@ public final class WrappedVillager {
     }
 
     /**
-     * @return True if the villager is optimized by this plugin, otherwise false.
+     * @return True if the villager is optimized by either this plugin or a supported alternative, otherwise false.
      */
     public boolean isOptimized() {
-        return dataContainer.has(Keys.OPTIMIZATION_TYPE.key(), PersistentDataType.STRING);
+        if (!parseOther) {
+            return isOptimized(Keys.Origin.VillagerOptimizer);
+        }
+        for (Keys.Origin pluginOrigin : Keys.Origin.values()) {
+            if (isOptimized(pluginOrigin)) return true;
+        }
+        return false;
+    }
+
+    /**
+     * @return True if the villager is optimized by the supported plugin, otherwise false.
+     */
+    public boolean isOptimized(Keys.Origin origin) {
+        return switch (origin) {
+            case VillagerOptimizer -> dataContainer.has(Keys.Own.OPTIMIZATION_TYPE.key(), PersistentDataType.STRING);
+            case AntiVillagerLag -> dataContainer.has(Keys.AntiVillagerLag.OPTIMIZED_ANY.key(), PersistentDataType.STRING)
+                    || dataContainer.has(Keys.AntiVillagerLag.OPTIMIZED_WORKSTATION.key(), PersistentDataType.STRING)
+                    || dataContainer.has(Keys.AntiVillagerLag.OPTIMIZED_BLOCK.key(), PersistentDataType.STRING);
+        };
     }
 
     /**
@@ -46,7 +66,15 @@ public final class WrappedVillager {
      * @return True if villager can be optimized again, otherwise false.
      */
     public boolean canOptimize(final long cooldown_millis) {
-        return getLastOptimize() + cooldown_millis <= System.currentTimeMillis();
+        if (parseOther) {
+            if (
+                    dataContainer.has(Keys.AntiVillagerLag.NEXT_OPTIMIZATION_SYSTIME_SECONDS.key(), PersistentDataType.LONG)
+                    && System.currentTimeMillis() <= 1000 * dataContainer.get(Keys.AntiVillagerLag.NEXT_OPTIMIZATION_SYSTIME_SECONDS.key(), PersistentDataType.LONG)
+            ) {
+                return false;
+            }
+        }
+        return System.currentTimeMillis() > getLastOptimize() + cooldown_millis;
     }
 
     /**
@@ -54,13 +82,15 @@ public final class WrappedVillager {
      */
     public void setOptimization(OptimizationType type) {
         if (type.equals(OptimizationType.NONE) && isOptimized()) {
-            dataContainer.remove(Keys.OPTIMIZATION_TYPE.key());
+            if (!parseOther || isOptimized(Keys.Origin.VillagerOptimizer)) {
+                dataContainer.remove(Keys.Own.OPTIMIZATION_TYPE.key());
+            }
             VillagerOptimizer.getScheduler().runAtEntity(villager, enableAI -> {
                 villager.setAware(true);
                 villager.setAI(true);
             });
         } else {
-            dataContainer.set(Keys.OPTIMIZATION_TYPE.key(), PersistentDataType.STRING, type.name());
+            dataContainer.set(Keys.Own.OPTIMIZATION_TYPE.key(), PersistentDataType.STRING, type.name());
             VillagerOptimizer.getScheduler().runAtEntity(villager, disableAI -> villager.setAware(false));
         }
     }
@@ -69,21 +99,54 @@ public final class WrappedVillager {
      * @return The current OptimizationType of the villager.
      */
     public @NotNull OptimizationType getOptimizationType() {
-        return isOptimized() ? OptimizationType.valueOf(dataContainer.get(Keys.OPTIMIZATION_TYPE.key(), PersistentDataType.STRING)) : OptimizationType.NONE;
+        if (!parseOther) {
+            return getOptimizationType(Keys.Origin.VillagerOptimizer);
+        }
+        OptimizationType optimizationType = getOptimizationType(Keys.Origin.VillagerOptimizer);
+        if (optimizationType != OptimizationType.NONE) {
+            return optimizationType;
+        }
+        return getOptimizationType(Keys.Origin.AntiVillagerLag);
+    }
+
+    public @NotNull OptimizationType getOptimizationType(Keys.Origin origin) {
+        return switch (origin) {
+            case VillagerOptimizer -> {
+                if (isOptimized(Keys.Origin.VillagerOptimizer)) {
+                    yield OptimizationType.valueOf(dataContainer.get(Keys.Own.OPTIMIZATION_TYPE.key(), PersistentDataType.STRING));
+                }
+                yield OptimizationType.NONE;
+            }
+            case AntiVillagerLag -> {
+                if (dataContainer.has(Keys.AntiVillagerLag.OPTIMIZED_BLOCK.key(), PersistentDataType.STRING)) {
+                    yield OptimizationType.BLOCK;
+                }
+                if (dataContainer.has(Keys.AntiVillagerLag.OPTIMIZED_WORKSTATION.key(), PersistentDataType.STRING)) {
+                    yield OptimizationType.WORKSTATION;
+                }
+                if (dataContainer.has(Keys.AntiVillagerLag.OPTIMIZED_ANY.key(), PersistentDataType.STRING)) {
+                    yield OptimizationType.COMMAND; // Best we can do
+                }
+                yield OptimizationType.NONE;
+            }
+        };
     }
 
     /**
      * Saves the system time in millis when the villager was last optimized.
      */
     public void saveOptimizeTime() {
-        dataContainer.set(Keys.LAST_OPTIMIZE.key(), PersistentDataType.LONG, System.currentTimeMillis());
+        dataContainer.set(Keys.Own.LAST_OPTIMIZE.key(), PersistentDataType.LONG, System.currentTimeMillis());
     }
 
     /**
      * @return The system time in millis when the villager was last optimized, 0L if the villager was never optimized.
      */
     public long getLastOptimize() {
-        return dataContainer.has(Keys.LAST_OPTIMIZE.key(), PersistentDataType.LONG) ? dataContainer.get(Keys.LAST_OPTIMIZE.key(), PersistentDataType.LONG) : 0L;
+        if (dataContainer.has(Keys.Own.LAST_OPTIMIZE.key(), PersistentDataType.LONG)) {
+            return dataContainer.get(Keys.Own.LAST_OPTIMIZE.key(), PersistentDataType.LONG);
+        }
+        return 0L;
     }
 
     /**
@@ -95,7 +158,21 @@ public final class WrappedVillager {
      * @return The time left in millis until the villager can be optimized again.
      */
     public long getOptimizeCooldownMillis(final long cooldown_millis) {
-        return dataContainer.has(Keys.LAST_OPTIMIZE.key(), PersistentDataType.LONG) ? (System.currentTimeMillis() - (dataContainer.get(Keys.LAST_OPTIMIZE.key(), PersistentDataType.LONG) + cooldown_millis)) : cooldown_millis;
+        long remainingMillis = 0L;
+
+        if (parseOther) {
+            if (dataContainer.has(Keys.AntiVillagerLag.NEXT_OPTIMIZATION_SYSTIME_SECONDS.key(), PersistentDataType.LONG)) {
+                remainingMillis = System.currentTimeMillis() - dataContainer.get(Keys.AntiVillagerLag.NEXT_OPTIMIZATION_SYSTIME_SECONDS.key(), PersistentDataType.LONG);
+            }
+        }
+
+        if (remainingMillis > 0) return remainingMillis;
+
+        if (dataContainer.has(Keys.Own.LAST_OPTIMIZE.key(), PersistentDataType.LONG)) {
+            return System.currentTimeMillis() - (dataContainer.get(Keys.Own.LAST_OPTIMIZE.key(), PersistentDataType.LONG) + cooldown_millis);
+        }
+
+        return cooldown_millis;
     }
 
     /**
@@ -120,18 +197,30 @@ public final class WrappedVillager {
      * Saves the time of the in-game world when the entity was last restocked.
      */
     public void saveRestockTime() {
-        dataContainer.set(Keys.LAST_RESTOCK.key(), PersistentDataType.LONG, villager.getWorld().getFullTime());
+        dataContainer.set(Keys.Own.LAST_RESTOCK.key(), PersistentDataType.LONG, villager.getWorld().getFullTime());
     }
 
     /**
      * @return The time of the in-game world when the entity was last restocked.
      */
     public long getLastRestock() {
-        return dataContainer.has(Keys.LAST_RESTOCK.key(), PersistentDataType.LONG) ? dataContainer.get(Keys.LAST_RESTOCK.key(), PersistentDataType.LONG) : 0L;
+        long lastRestock = 0L;
+        if (dataContainer.has(Keys.Own.LAST_RESTOCK.key(), PersistentDataType.LONG)) {
+            lastRestock = dataContainer.get(Keys.Own.LAST_RESTOCK.key(), PersistentDataType.LONG);
+        }
+        if (parseOther) {
+            if (dataContainer.has(Keys.AntiVillagerLag.LAST_RESTOCK_WORLDFULLTIME.key(), PersistentDataType.LONG)) {
+                long lastAVLRestock = dataContainer.get(Keys.AntiVillagerLag.LAST_RESTOCK_WORLDFULLTIME.key(), PersistentDataType.LONG);
+                if (lastRestock < lastAVLRestock) {
+                    lastRestock = lastAVLRestock;
+                }
+            }
+        }
+        return lastRestock;
     }
 
     public long getRestockCooldownMillis(final long cooldown_millis) {
-        return dataContainer.has(Keys.LAST_RESTOCK.key(), PersistentDataType.LONG) ? (villager.getWorld().getFullTime() - (dataContainer.get(Keys.LAST_RESTOCK.key(), PersistentDataType.LONG) + cooldown_millis)) : cooldown_millis;
+        return dataContainer.has(Keys.Own.LAST_RESTOCK.key(), PersistentDataType.LONG) ? (villager.getWorld().getFullTime() - (dataContainer.get(Keys.Own.LAST_RESTOCK.key(), PersistentDataType.LONG) + cooldown_millis)) : cooldown_millis;
     }
 
     /**
@@ -152,14 +241,23 @@ public final class WrappedVillager {
      * @return Whether the villager can be leveled up or not with the checked milliseconds
      */
     public boolean canLevelUp(final long cooldown_millis) {
-        return getLastLevelUpTime() + cooldown_millis <= villager.getWorld().getFullTime();
+        if (villager.getWorld().getFullTime() < getLastLevelUpTime() + cooldown_millis) {
+            return false;
+        }
+
+        if (parseOther) {
+            return !dataContainer.has(Keys.AntiVillagerLag.NEXT_LEVELUP_SYSTIME_SECONDS.key(), PersistentDataType.LONG)
+                    || System.currentTimeMillis() > dataContainer.get(Keys.AntiVillagerLag.NEXT_LEVELUP_SYSTIME_SECONDS.key(), PersistentDataType.LONG) * 1000;
+        }
+
+        return true;
     }
 
     /**
      * Saves the time of the in-game world when the entity was last leveled up.
      */
     public void saveLastLevelUp() {
-        dataContainer.set(Keys.LAST_LEVELUP.key(), PersistentDataType.LONG, villager.getWorld().getFullTime());
+        dataContainer.set(Keys.Own.LAST_LEVELUP.key(), PersistentDataType.LONG, villager.getWorld().getFullTime());
     }
 
     /**
@@ -169,22 +267,22 @@ public final class WrappedVillager {
      * @return The time of the in-game world when the entity was last leveled up.
      */
     public long getLastLevelUpTime() {
-        return dataContainer.has(Keys.LAST_LEVELUP.key(), PersistentDataType.LONG) ? dataContainer.get(Keys.LAST_LEVELUP.key(), PersistentDataType.LONG) : 0L;
+        return dataContainer.has(Keys.Own.LAST_LEVELUP.key(), PersistentDataType.LONG) ? dataContainer.get(Keys.Own.LAST_LEVELUP.key(), PersistentDataType.LONG) : 0L;
     }
 
     public long getLevelCooldownMillis(final long cooldown_millis) {
-        return dataContainer.has(Keys.LAST_LEVELUP.key(), PersistentDataType.LONG) ? (villager.getWorld().getFullTime() - (dataContainer.get(Keys.LAST_LEVELUP.key(), PersistentDataType.LONG) + cooldown_millis)) : cooldown_millis;
+        return dataContainer.has(Keys.Own.LAST_LEVELUP.key(), PersistentDataType.LONG) ? (villager.getWorld().getFullTime() - (dataContainer.get(Keys.Own.LAST_LEVELUP.key(), PersistentDataType.LONG) + cooldown_millis)) : cooldown_millis;
     }
 
     public void memorizeName(final Component customName) {
-        dataContainer.set(Keys.LAST_OPTIMIZE_NAME.key(), PersistentDataType.STRING, MiniMessage.miniMessage().serialize(customName));
+        dataContainer.set(Keys.Own.LAST_OPTIMIZE_NAME.key(), PersistentDataType.STRING, MiniMessage.miniMessage().serialize(customName));
     }
 
     public @Nullable Component getMemorizedName() {
-        return dataContainer.has(Keys.LAST_OPTIMIZE_NAME.key(), PersistentDataType.STRING) ? MiniMessage.miniMessage().deserialize(dataContainer.get(Keys.LAST_OPTIMIZE_NAME.key(), PersistentDataType.STRING)) : null;
+        return dataContainer.has(Keys.Own.LAST_OPTIMIZE_NAME.key(), PersistentDataType.STRING) ? MiniMessage.miniMessage().deserialize(dataContainer.get(Keys.Own.LAST_OPTIMIZE_NAME.key(), PersistentDataType.STRING)) : null;
     }
 
     public void forgetName() {
-        dataContainer.remove(Keys.LAST_OPTIMIZE_NAME.key());
+        dataContainer.remove(Keys.Own.LAST_OPTIMIZE_NAME.key());
     }
 }
\ No newline at end of file
diff --git a/src/main/java/me/xginko/villageroptimizer/config/Config.java b/src/main/java/me/xginko/villageroptimizer/config/Config.java
index 68ded85..c62ae2d 100644
--- a/src/main/java/me/xginko/villageroptimizer/config/Config.java
+++ b/src/main/java/me/xginko/villageroptimizer/config/Config.java
@@ -1,20 +1,18 @@
 package me.xginko.villageroptimizer.config;
 
 import io.github.thatsmusic99.configurationmaster.api.ConfigFile;
-import io.github.thatsmusic99.configurationmaster.api.ConfigSection;
 import me.xginko.villageroptimizer.VillagerOptimizer;
 import org.jetbrains.annotations.NotNull;
 
 import java.io.File;
 import java.util.List;
 import java.util.Locale;
-import java.util.Map;
 
 public class Config {
 
     private final @NotNull ConfigFile config;
     public final @NotNull Locale default_lang;
-    public final boolean auto_lang;
+    public final boolean auto_lang, support_other_plugins;
     public final long cache_keep_time_seconds;
 
     public Config() throws Exception {
@@ -35,6 +33,9 @@ public class Config {
                 "If set to true, will display messages based on client language");
         this.cache_keep_time_seconds = getInt("general.cache-keep-time-seconds", 30,
                 "The amount of time in seconds a villager will be kept in the plugin's cache.");
+        this.support_other_plugins = getBoolean("general.support-avl-villagers", true, """
+                Enable if you have previously used AntiVillagerLag (https://www.spigotmc.org/resources/antivillagerlag.102949/).\s
+                Tries to read pre-existing info like optimization state so players don't need to reoptimize their villagers.""");
     }
 
     public void saveConfig() {
diff --git a/src/main/java/me/xginko/villageroptimizer/enums/Keys.java b/src/main/java/me/xginko/villageroptimizer/enums/Keys.java
index 85b05e6..e7e2436 100644
--- a/src/main/java/me/xginko/villageroptimizer/enums/Keys.java
+++ b/src/main/java/me/xginko/villageroptimizer/enums/Keys.java
@@ -2,19 +2,62 @@ package me.xginko.villageroptimizer.enums;
 
 import me.xginko.villageroptimizer.VillagerOptimizer;
 import org.bukkit.NamespacedKey;
+import org.bukkit.persistence.PersistentDataContainer;
+import org.bukkit.plugin.Plugin;
 
-public enum Keys {
-    OPTIMIZATION_TYPE(VillagerOptimizer.getKey("optimization-type")),
-    LAST_OPTIMIZE(VillagerOptimizer.getKey("last-optimize")),
-    LAST_LEVELUP(VillagerOptimizer.getKey("last-levelup")),
-    LAST_RESTOCK(VillagerOptimizer.getKey("last-restock")),
-    LAST_OPTIMIZE_NAME(VillagerOptimizer.getKey("last-optimize-name"));
+import java.util.Locale;
 
-    private final NamespacedKey key;
-    Keys(NamespacedKey key) {
-        this.key = key;
+public class Keys {
+    public enum Origin {
+        VillagerOptimizer,
+        AntiVillagerLag;
     }
-    public NamespacedKey key() {
-        return key;
+
+    public enum Own {
+        OPTIMIZATION_TYPE(VillagerOptimizer.getKey("optimization-type")),
+        LAST_OPTIMIZE(VillagerOptimizer.getKey("last-optimize")),
+        LAST_LEVELUP(VillagerOptimizer.getKey("last-levelup")),
+        LAST_RESTOCK(VillagerOptimizer.getKey("last-restock")),
+        LAST_OPTIMIZE_NAME(VillagerOptimizer.getKey("last-optimize-name"));
+
+        private final NamespacedKey key;
+        Own(NamespacedKey key) {
+            this.key = key;
+        }
+        public NamespacedKey key() {
+            return key;
+        }
+    }
+
+    public enum AntiVillagerLag {
+        NEXT_OPTIMIZATION_SYSTIME_SECONDS("cooldown"), // Returns LONG -> System.currentTimeMillis() / 1000 + cooldown seconds
+        LAST_RESTOCK_WORLDFULLTIME("time"), // Returns LONG -> villager.getWorld().getFullTime()
+        NEXT_LEVELUP_SYSTIME_SECONDS("levelCooldown"), // Returns LONG -> System.currentTimeMillis() / 1000 + cooldown seconds
+        OPTIMIZED_ANY("Marker"), // Returns STRING -> "AVL"
+        OPTIMIZED_BLOCK("disabledByBlock"), // Returns STRING -> key().toString()
+        OPTIMIZED_WORKSTATION("disabledByWorkstation"); // Returns STRING -> key().toString()
+
+        private final NamespacedKey key;
+
+        AntiVillagerLag(String avlKey) {
+            this.key = getKey(avlKey);
+        }
+
+        public NamespacedKey key() {
+            return key;
+        }
+
+        /**
+         * Returns a NamespacedKey as if it was created by AntiVillagerLag.
+         * This is possible because they are created using {@link NamespacedKey#NamespacedKey(Plugin, String)},
+         * meaning the Namespace is always the return of {@link Plugin#getName()} && {@link String#toLowerCase()}
+         * using {@link Locale#ROOT}
+         *
+         * @return a {@link NamespacedKey} that can be used to test for and read data stored by AntiVillagerLag
+         * from a {@link PersistentDataContainer}
+         */
+        public static NamespacedKey getKey(String key) {
+            return new NamespacedKey("AntiVillagerLag".toLowerCase(Locale.ROOT), key);
+        }
     }
 }
diff --git a/src/main/java/me/xginko/villageroptimizer/modules/optimization/OptimizeByBlock.java b/src/main/java/me/xginko/villageroptimizer/modules/optimization/OptimizeByBlock.java
index 2cf3453..7b4d9a5 100644
--- a/src/main/java/me/xginko/villageroptimizer/modules/optimization/OptimizeByBlock.java
+++ b/src/main/java/me/xginko/villageroptimizer/modules/optimization/OptimizeByBlock.java
@@ -4,8 +4,8 @@ import me.xginko.villageroptimizer.VillagerCache;
 import me.xginko.villageroptimizer.VillagerOptimizer;
 import me.xginko.villageroptimizer.WrappedVillager;
 import me.xginko.villageroptimizer.config.Config;
-import me.xginko.villageroptimizer.enums.permissions.Bypass;
 import me.xginko.villageroptimizer.enums.OptimizationType;
+import me.xginko.villageroptimizer.enums.permissions.Bypass;
 import me.xginko.villageroptimizer.enums.permissions.Optimize;
 import me.xginko.villageroptimizer.events.VillagerOptimizeEvent;
 import me.xginko.villageroptimizer.events.VillagerUnoptimizeEvent;